More than 50 people called police after a fresh appeal for help catching a rapist.

Callers to BBC's Crimewatch programme on Tuesday gave several possible names for the atttacker after a harrowing reconstruction of the crime in Dyke Road Park, Brighton, in February.

They also gave a possible clue to his nationality, after identifying a phrase he used as a Russian dialect or Eastern European language.

Police have the attacker's DNA but have not found a match on the national database.

Detectives plan to use that evidence to either confirm or rule out the men whose names they have been given by the public.

They issued CCTV footage of the man walking behind the teenager before the attack.

Tuesday's reconstruction showed the 17-year-old A-level student walking home from a night out in the city.

She realised as she walked along Dyke Road that a man was behind her, and crossed the road as a precaution.

Her account was voiced by an actress.

She said: “I was aware there was a man behind me, quite far away from me, so I just crossed the road.”

She was grabbed from behind near the Booth Museum of Natural History, at about 12.20am, and dragged across the road into the park.

Detective Chief Inspector Trevor Bowles praised her for her bravery in asking for the attacker's name.

He said he was called David and also said the word “cliché, cliché” twice.

Callers to the programme said the word could be similar to an Eastern European language's phrase for “shut up”, or “be quiet”.

DCI Bowles said: “It was a brazen attack on a busy road, a quite awful and terrifying ordeal.”

After she was raped, the teenager managed to get away to the nearby Tesco Express garage and call police.

She told the programme: “It doesn't feel real. It didn't feel real at all. It still doesn't feel real.”

The attacker was described as being in his 30s, olive skinned and stocky with short dark hair and sideburns.

He was wearing jeans, a dark jacket and trainers and may have been wearing a hat.

A 19-year-old man arrested in February and a man whose CCTV image was released to the public in March have both been ruled out of the inquiry.

Anyone with information is asked to call Sussex Police on 0845 6070999, quoting Operation Dublin, or Crimestoppers anonymously on 0800 555111.